157836815135 has 4 divisors (see below), whose sum is σ = 189404178168. Its totient is φ = 126269452104.

The previous prime is 157836815107. The next prime is 157836815189. The reversal of 157836815135 is 531518638751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 531518638751 = 135913 ⋅3910727.

It is a cyclic number.

It is not a de Polignac number, because 157836815135 - 2¹⁴ = 157836798751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15783681509 + ... + 15783681518.

It is an arithmetic number, because the mean of its divisors is an integer number (47351044542).

Almost surely, 2^157836815135 is an apocalyptic number.

157836815135 is a deficient number, since it is larger than the sum of its proper divisors (31567363033).

157836815135 is an equidigital number, since it uses as much as digits as its factorization.

157836815135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31567363032.

The product of its digits is 3024000, while the sum is 53.

The spelling of 157836815135 in words is "one hundred fifty-seven billion, eight hundred thirty-six million, eight hundred fifteen thousand, one hundred thirty-five".